Window ventilator



June 1 1926.

A. A. CRAIG WINDOW VENTILATOR Filed April. 5. 1922 holds a the 1 ventilato Patented June 1,

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invention relates to ventilators. I More particularly ,my invention relates. to

that typeof ventilator disclosed in my :copending application, Serial No. 501,083filed1 September '6, 1921a In this application" I;

have illustrated.arplural'ity'of panels :assembledv in extensiblerrelation, having frictionalgripping members at. the window en-:

gaging ends, SO1=tl1Lt upon 'extendinguthe panels the frictional engagement, securely window. I

Inthedevelopment of window ventilators, simplicity ofdesigmcheapness. of construce tion, anduniversality; of adaptation are the most important factorsj Asubstantial construction usually, can-be obtained, but never at such costas to make the devicevpractical and :usefulinalmostfever'y case wherever a ventilator is-desirable. IL find that in some instances, the use of holding devices attached directly to the window. frame by nails Y or bolts'sis highly objectionable because ofthe "resultant mutilation to the window frame; while, in other instances, the provis on of 3 holding devicesfincreases the cost'of prodiio tion.,,,It is withthe view of overcoming these objections that; It'have -designed the present 7 ventilatongjbeing, fundamentally simple in structure,.v-andeffective to the end, of producing adeviceembodying all the necessary requirements of a practical ventilator.

In my. prior applicatiomflthei friction means carried at the awindow en gaging ends of the pane-ls;-was-illustrated'gin theform for reinforcing members covered-by; material of (attached to-the-panelsr high frictional quality about the engaging surfaces. AInQthe; present inventiornl pros pose to improve thisconstruction by eIiminating the reinforcing members and in their stead, form socket membersfon the edgesof the panelslthemselves. While the present disclosure illustrates these socket members integral with the vpanels, it is evident that they may be constructed separately andthen A furtherobjectof the :invention is the provision of novelmeans; for permanently securing,the friction strips in the socket members so that the-binding engagement of the ventilator-in the window frame,-which causes compression -of-:these strips, will 7 not; loosen them from their mounting;- In orderto apprise those;skilled,ing.gthe art- 'how to construct and practice my invention, I; shall now describe"airembodlment of my invenrpinI position in the frame.

1 2, Sam m5, 548,973.

tion in eonnectionfwith theyaccompanying drawings; in'which, i b

F gure l sa fragmentary isometric view of a window frame having :a ventilator,

which 7 embodies my invention, inserted :loyedto holdthe panels extensible rela- Fig. iview looking-slightlydownwardly at the window engaging endof apanel'; a a

Fig. 5 1s asimilar; view butillustrating a same line and f-Fig.. 7is a view panel yen-F .from escaping therethrough.

yThepanels 2 and8jare eachfornied ofa single piece of materiahlpreferably by a stamping operation,. so that the-1 longitudi 'nal edges. 4 arebent back upon themselves for reinforcement- {It will be noted that the bent over longitudinal edges of panels 3 "are on the side which engages the v panel;2,fi

and that; theflface of the latter panel thus engaged s fiatfrom end to end,-,softhat,the

Fig. i 21 is, T top end view of the ventilator Fig. :3 is a detail view of the bolt em-- Y slig t modification ,of the manner of carryng the frlction strip; a o -"Fig. 6 illustrates'a modification, along the Theconstruction:which'is showniin r I i i over the entire area, being spacedaparts a T panels are slightly spaced apart; b .th turned over edges 4 .of'the panel These turned over edges 4 uniquely enter into the novelty of the construction, in that theysree duce the engaging 1 surfacesof {the panels," and "hence the friction, in. order to permit easy movement of the panels, when the ven tilator is adjustedftoa certain size window I The Part emulators enema-O;

"which efi'ectsits extensibility comprisesa plurality I of non-registering" slots 1 5, cut in the panels atatheir inner overlapping ends, andbolts 6, stationarily mounted in the ,op

posite panel fonsliding in the slots. yAs shown in Fig. 3, the threaded shankof the bolt 6 passes-from the panel 2 through the slot 5, andui nto the; panel 3,.wi'thits free end-v carrying a thumb nut 8. Collars 9a1e dis.- posed between the headsofithe bolt (Stand also the thumb nut 8, and" the panels, so that a proper bearing between the; former two and the latter will be obtained, While, a collar 10 is carried olr the-bolt (i between the panels to prevent destroying the spacing provided by the turned overedges of thepanels 3.

When thepanelsQand 3 EIIGQChUStQdBO as to fit tightly in. a 1 window frame, their outer" ends-bind against the frame; The binding action is such that these ends are slightly. compressed to obtain the fIlGtlOD B-EQLIlIBCl to liold the ventilator place. I haveprovided; in this-instance, a strip 12 of 05 1111- drical conformation at each of said ends, Wh'ieh strip is of" material havinga vhigh frictional quality, preferably rubber. How ever, it is apparent that various kinds of: material will' serve equally as W811i Theouterend ofeach paneli-Q; and 331s: formed into a semi-circular SOOkebll, WhlCll: partiall y embracesthe strip 12, so that a portion of the cylindrical surface of this strip is exposed beyond the extreme outer edge of the panelsthemselvesl this edge being; designated 15; The cyllndrical surfaceof thestrips-12are provided with vertical 'flutes 16 fr01n endto end, which enhances the frictional ability of: the strips, and also provides aplurality of grooves transverse-to tlie semi-circular line of engagementbetween the strip and socket, into which oementmay fiow, ifused, for obtain:- ingan increased locking engagement That is to say, the cement interlocks-with the strips by means of" aplurality' of r dges formed by virtue of the flutes these ridges lying; perpendicular to the engaging sur face between the strip and socket. This form of dbckingthestrips to the outer ends of-theapanelsi's illustrated in F ig: 5;;

InFig= 6, I; have shown substant1a-lly the sameconst-ructiong. but the strips 12* in this instance have an internal reinforcing rod 11? extendinglengthwise witlr its ends pro jeeting beyond the enids of the strips 12; but turned dow m-andaround the back of the sookets-ll, so: as notto protrude: and'int'erferewith t'he engagement of the ventilator with the window sill; In: addition to this,

the turned over ends-17 ofthe-rods l l 'funo tion' toiloek-the strips 12 in the sockets-14.

11,. Beforethe rod 11 isinserted, the ends thereof are slitted} with: one strand passing through the strips 12, at a point adjacent to theend, andralso'through the wall of the socket 14'. The other strand extends to the Very end'of the strip, but countersunk so as to lie flush With the end thereof. The ends of. these twostrands are then bent over so as to meeteach other. This manner of interlookingi the? enrlsaof: the rods l l with the sockets and stripsxlQ; is unique, in that it: is; effective and: s presents a: finishedi appearance; s

While I; have: disclosedi. in; the foregoing. description a ventilatortwhiolu is:.tndaensiblex,- it; is: apparent that: myinvention may: beembodiedi in a; single; panel ventilation conistructe'd to 1 fit in; a eent'aim size; window: frame.-.. Thisqfonm ofsl ventilatoris 'illuse tratediin Big: 7. The 'panelil20f is: provided? with sockets 14 at each end, carrying." the friction strips-12:. in aeinannerisimilart :03 the forms previously-described;

lVithout further elaboration, then fore going will: so X fully-explain the gist oifi my in vention, that others may; by; applyingpurrent r knowledge, readil y adapt" the same for use undervarious conditions. of service, Without eliminating certain features which may properly be said to:constitute the essem tial items of noveltyinv0l ved,. which 'itemsare intended to bedefined and isecured to me by the followin'g claims.-

I claim:- 7 1'. Iin combinati'om a: sheet metaL'iv-enti later; of panel formationa'dapted for in sertion in a WIlTld'OW frame," a compressible retainingelement oarried' at one end of said ventilator; a socket n'oember on said panel for carrying; said compressible element; 1 said socketmember being integral with and formed by bending back the end of the panel uponntselfto: constitute a:sooket oom= forming;- substantially to the shape off 'said compressibleelementfi 2:111 combination, a: ventilatoradapted for'insertion: in a:. window frameya compres sible element extending-21 substantial distance 4 along the ends;- of saidventilator, mountingmeans for said element; a rod passing through-said element' 'and projecting ffonr-the ends ofthelatter; said projecting ends being turned over s0 as i to I interlock with said. 1nounting -membe1 andl means serving to hold said element intermediate its" ends in saidmount-ing meansi 311 11" combination; a ventilator compris iiiga--panel of sheet met'al' liaving'onw of its end's' formedinto-a relatively cylindrical socket, compressible element secured to said socket; by cement, said compressible member being relatively cylindrioal in form.

In witness whereof? I hereunto subscribe my name'thisBO day Of March,192221 a ORA-1G5 

